BMW K bikes (Bricks)

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1Back to top Go down   Final drive grease in oil. Empty Final drive grease in oil. on Sat Mar 21, 2020 7:12 pm

JTurns

JTurns
New member
New member
Hi all,

Recently purchased an 86 K100RT. When I drained the final drive oil it had grey streaks which appeared to be grease though the oil.

There was also a clump of grey grease sitting on the drain bolt when I removed it.

Can anyone tell me where this may have come from? Final drive spline?

    

2Back to top Go down   Final drive grease in oil. Empty Re: Final drive grease in oil. on Sat Mar 21, 2020 7:43 pm

MartinW

MartinW
Life time member
Life time member
Some owners add molybdenum disulphide to their gearboxes and final drive. This can take the form of powder, oil or grease. This can and does separate and can sink to the lower parts of the final drive forming a sludge.
Regards Martin.


__________________________________________________
K75s Hybrid
    

3Back to top Go down   Final drive grease in oil. Empty Re: Final drive grease in oil. on Sat Mar 21, 2020 10:51 pm

Laitch

Laitch
Life time member
Life time member
If that clump of grease is magnetic, it might be metal shavings mixed with transmission oil.


__________________________________________________
1995 K75 73,000 miles
Final drive grease in oil. Usa-lo10
    

4Back to top Go down   Final drive grease in oil. Empty Re: Final drive grease in oil. on Mon Mar 23, 2020 7:53 am

Holister

Holister
Life time member
Life time member
There is no way spline lube can get into the FD.
Agree with Laitch. What you have there are minute metal particles that have clumped together. The drain bolt will be magnetic to attract the particles away from the gears.
As you probably have no history on servicing, having just bought the machine, you could guess that the oil hasn't been changed for a while. Just do your servicing and keep an eye on it.


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1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
  Final drive grease in oil. Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

5Back to top Go down   Final drive grease in oil. Empty Re: Final drive grease in oil. on Mon Mar 23, 2020 8:10 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
@MartinW wrote:Some owners add molybdenum disulphide to their gearboxes and final drive. This can take the form of powder, oil or grease. This can and does separate and can sink to the lower parts of the final drive forming a sludge.
Regards Martin.
Take out the drain bolt and this stuff can be seen sitting on top of it. I use it in my Ks.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 103,800 miles
1983 K100RS 0011171 Fricka 606 29,495 miles Damn K Pox Its a Bat outta Hell Now 36,188  miles
    

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